One day, a great earthquake struck a peaceful school. When we woke up, the world had changed drastically... The campus was infested with an unknown FT virus, and everyone had turned into zombies. It seems that those of us who didn't turn into zombies have immunity, and Dr. Takashima developed a vaccine from our sperm! Drinking it boosts stamina!! It appears that by ejaculating inside, we can reverse the zombie transformation. To save our friends, we stood up!!!
